Determines at runtime is UIApplication is available as per SDWebImage…

…#1082
heroims · Mar 20, 2015 · 17a4803 · 17a4803
1 parent f2252b3
commit 17a4803
Show file tree

Hide file tree

Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/SDWebImage/SDImageCache.m b/SDWebImage/SDImageCache.m
@@ -474,6 +474,10 @@ - (void)cleanDiskWithCompletionBlock:(SDWebImageNoParamsBlock)completionBlock {
 }
 
 - (void)backgroundCleanDisk {
+    Class UIApplicationClass = NSClassFromString(@"UIApplication");
+    if(!UIApplicationClass || ![UIApplicationClass respondsToSelector:@selector(sharedApplication)]) {
+        return;
+    }
     UIApplication *application = [UIApplication sharedApplication];
     __block UIBackgroundTaskIdentifier bgTask = [application beginBackgroundTaskWithExpirationHandler:^{
         // Clean up any unfinished task business by marking where you

diff --git a/SDWebImage/SDWebImageDownloaderOperation.m b/SDWebImage/SDWebImageDownloaderOperation.m
@@ -70,7 +70,9 @@ - (void)start {
         }
 
 #if TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_4_0
-        if ([self shouldContinueWhenAppEntersBackground]) {
+        Class UIApplicationClass = NSClassFromString(@"UIApplication");
+        BOOL hasApplication = UIApplicationClass && [UIApplicationClass respondsToSelector:@selector(sharedApplication)];
+        if (hasApplication && [self shouldContinueWhenAppEntersBackground]) {
             __weak __typeof__ (self) wself = self;
             self.backgroundTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
                 __strong __typeof (wself) sself = wself;
@@ -122,6 +124,10 @@ - (void)start {
     }
 
 #if TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_4_0
+    Class UIApplicationClass = NSClassFromString(@"UIApplication");
+    if(!UIApplicationClass || ![UIApplicationClass respondsToSelector:@selector(sharedApplication)]) {
+        return;
+    }
     if (self.backgroundTaskId != UIBackgroundTaskInvalid) {
         [[UIApplication sharedApplication] endBackgroundTask:self.backgroundTaskId];
         self.backgroundTaskId = UIBackgroundTaskInvalid;